/*
Your task is to construct a building which will be a pile of n cubes. The cube at the bottom will have a volume of n^3, the cube above will have volume of (n-1)^3 and so on until the top which will have a volume of 1^3.

You are given the total volume m of the building. Being given m can you find the number n of cubes you will have to build?

The parameter of the function findNb (find_nb, find-nb, findNb) will be an integer m and you have to return the integer n such as n^3 + (n-1)^3 + ... + 1^3 = m if such a n exists or -1 if there is no such n.

Examples:

findNb(1071225) --> 45
findNb(91716553919377) --> -1
*/



function findNb(m) {
    // your code
    let value = 0;
    for (let i = 1; ; i++) {
        value += i * i * i;
        if (value > m) {
            return (-1);
        } else if (value == m) {
            return i;
        } else {
            continue;
        }
    }
}
